Apparatus for the utilization in a reheater of the exhaust-steam of locomotives.



PATBNTED MAY 7, 1907.

0. OAILLE. APPARATUS FOR THE UTILIZATION IN A REHBATER OF THE EXHAUST STEAM 0F LOCOMOTIVES.

APPLICATION FILED 00121, 1906.

W1 T/VESSES w; x fi n'rrnn sra rns earner 3 CHARLES CAILLE, F LE PERREUX, FRANCE.

FFICO APPARATUS FOR THE UTILIZATlON IN A REHEATER 0F THE liXHAUST-STEAM' OF LOCOMOTIVES.

To all whom it may concern: Be it known that 1, CHARLES OAILLE, a citizen of the Republic of France, residing at 7 Rue des Vignes, Le Perreux, in the Republic of France, have invented new and useful Improvements in Apparatus for the Utilization in a Reheater of the Exhaust-Steam of Locomotives, of which the following is a specification.

The pres. int invention has for its object an apparatus which permits of the utilization in .a re-heater oi" a portion of the exhaust steam in locomotives, which now is employed only in drawing air through the furnace.

A form of construction of the inventionis represented in sectional elevation on the accompanying drawing.

The invention consists in principle of a reheater interposed in the exhaust passage and forming a closed vessel through which a portion of the escaping steam is diverted, after emerging from the exhaust chest before reaching the draft producing escape throat.

In practice, in the exhaust passage below the throttle-valves b of variable opening is I interposed an 7 ejector of which the central cone c is connected by a pipe d, to the exhaustchest 6 of the cylinders, and to this pipe is branched one extremity of a pipe fby which is diverted a portion of the exhaust steam, the other extremity being joined to the utilre-heater 7c.

izing apparatus, that is to say to a tubular The surrounding cone 9 of the ejector is l connected by a pipe h to the outletiv of the va por of the re-heater. The re-lieater, which may be variously constructed, comprises a chamber m for the admission of steam, closed by a tube plate 0, carrying one of the extremities of a ser? es of tubes n the opposite extremities of which are secured to a tubc-plate g and open into a chamber 7) for the outlet of the steam and water of condensation.

WVithin the casing 7r between the tube plates 0 and around the tubes n, is produced a circulation of water in the inverse direction of the circulation of the steam, 7 being the admission pipe of the cold water, and s the outlet pipe of the re-heated water. This arrangement can be inverted, in respect that Specification of Letters Patent. Application filed October 1,-1 906. Serial No. 336,958.

the water of condensation, to which may be Patented May 7, 1907.

united an automatic steam-trap of, dilatation or other form.

A portion of the exhaust steam-which escapes from the chest e, by the pipe d, is diverted to the pipe f, through an orifice uregulated by a register or a flap '0, the vapors not diverted escape by the central cone 0 of the ejector, and draw into the cone g by the pipe h, the residuary vapors leaving the re-heatet at t. This suction of the residuary va ors produces an active circulation on one o the walls of the cluster of pipes n,'over the other wall of which sweeps the stream of Water with inverted circulation. Theresult being that the walls of transmission for the heat are maintained constantly active and the 7b condensed water being carried toward the steam-trap, not only is thus utilized, as rapidly and as perfectly as possible, the heat derived by the exhaust steam, but also the steam which has not been used in the reheater is recovered. The diversion effected on. the exhaust steam does not cause any appreciable diminution of the forced draft in the furnace, for the interposed ejector as sures the preservation of the moving force of 8 the stream toward the contracted throat at b.

The re-heater constitutes in fact a'elosed vessel interposed as a by-path to the exhaust passage. in this will not be found the con-- ditions of an ordinary re heater which ren- '85 ders possible the re-entry of air and the consumption without possible recovery of all the vapor diverted.

It goes without saying that the interposed ejector can be connected with the exhaust 9o pipes from the two steam cylinders, or it will e possible, if so desired, to provide an interposed ejector for each of the engines, the reheater being supplied by steam from one or both exhausts as may be desired.

I claim:

1. In combination with the steam chest and the exhaust passage therefrom having the nozzle therein, of a re-hea-ter having its inlet connected to theexhaustpassage be- Ioc low the nozzle and its outlet connected to that part of the. exhaust passage surrounding the outlet end of the nozzle; u

2. In combination With, llhsteanL'chest and the exhaust passe e therefrom having ejector therein of areeater'having itsjnlet' and outlet ports connected to the in', te ;rior v 3. In combination with the steam chest '1 In testimony whereof I have signed my and the exhaust passage therefrom having an name to this specification in the presence bf eject-0r therein Of a rc-heater having its inlet K two subscribing Witnesses. and outlet ports connected to the interior 1 CHARLES CAILLE. and extericr parts of the ejector, and {L flap Witnesses: e in the exhaust passage controlking the inlet Lows GAnnE of the ri -heater. -DIJAN I). MAsuN. 

